Ba Quartet X is a fan-made action-platformer that combines elements from the Touhou Project and the Mega Man X series, offering a unique gaming experience. Players take control of four distinct characters: Cirno, Mystia Lorelei, Wriggle Nightbug, and Rumia, each with unique abilities that enhance gameplay dynamics. The game features vibrant graphics and fluid animations, creating an engaging environment for action enthusiasts.

The gameplay emphasizes platforming challenges and combat, with levels designed to test players' skills and reflexes. The character abilities allow for diverse strategies in overcoming obstacles and defeating enemies. As a full version game available on Windows, Ba Quartet X caters to fans of both the Touhou universe and action-platformers, providing hours of entertainment with its well-crafted levels and character interactions.